Polo Grounds - Wikipedia
For Sale: A Relic From Babe Ruth's Ill-Fated Year in Brooklyn - Atlas Obscura
Attic discovery: NJ man's baseball card collection includes 6 Babe Ruth autographs – Boston 25 News
Auction Details Backes Auctioneers
Baseball - Sports Collectors Digest
Babe Ruth's Dodgers Coaching Uniform Could Fetch Up to $500,000 – Robb Report
File:George Herman Babe Ruth from Sports Exchange All-Stars trade cards (W603) MET DPB882284.jpg - Wikimedia Commons
Joe DiMaggio - Wikipedia
Babe Ruth - Sports Collectors Digest
Auction Details Backes Auctioneers